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Mesoscale Discussion 1023
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   Mesoscale Discussion 1023
   NWS Storm Prediction Center Norman OK
   0936 PM CDT Tue Jun 13 2017

   Areas affected...Portions of north-central KS into eastern
   NE...western/central IA...and far northwestern MO

   Concerning...Severe Thunderstorm Watch 325...

   Valid 140236Z - 140330Z

   The severe weather threat for Severe Thunderstorm Watch 325

   SUMMARY...Damaging winds and large hail will continue to be the main
   threats with ongoing storms across WW 325. A downstream watch into
   more of IA appears unlikely at this time.

   DISCUSSION...A bowing line of convection has produced numerous
   measured 60-75 mph wind gusts as it has moved across eastern NE over
   the past several hours. Recent radar imagery from KOAX depicts
   outflow surging ahead of this line of storms as it approaches and
   crosses the NE/IA state line. Instability remains favorable for
   maintenance of this line for the next hour or so, as MLCAPE of
   2500-3000 J/kg resides immediately downstream. However, increasing
   convective inhibition noted on 02Z mesoanalysis into western/central
   IA should act to weaken ongoing convection as it moves eastward.
   While isolated damaging winds may occur for a brief period to the
   east of the WW 325, downstream watch issuance into more of
   western/central IA is unlikely at this time. Farther to the
   southwest across south-central NE and north-central IA, a cluster of
   supercells persists in producing large hail of 1-1.5 inches in
   diameter. This activity may continue for several more hours given a
   favorable thermodynamic and kinematic environment.

   ..Gleason.. 06/14/2017

   ...Please see for graphic product...


   LAT...LON   39169951 39889949 40459839 41479733 42189685 42199512
               42039481 41519443 40849453 40589499 39999649 38659782
               38719895 39179895 39169951 

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